318
FNCA52 TJSJ 070731
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
331 AM AST SAT FEB 7 2026
DISCUSSION
A HIGH PRESSURE SYSTEM OVER THE EASTERN ATLANTIC AN ITS
INTERACTION WITH AN APPROACHING FRONTAL BOUNDARY WILL PROMOTE WEST
TO NORTHWESTERLY WINDS AT AROUND 5 TO 17 MPH TODAY, BELOW THE
CRITICAL THRESHOLD. THE KBDI INDEX IN GUANICA IS NOW AT 508, WHILE
CABO ROJO AND CAMP SANTIAGO REMAIN ABOVE THE THRESHOLD, 655 AND
568, RESPECTIVELY. A DRIER THAN USUAL AIRMASS WILL DOMINATE THE
MORNING AND EARLY AFTERNOON HOURS, THEN MOISTURE WILL INCREASE BY
THE AFTERNOON INTO SUNDAY AS A FRONTAL BOUNDARY APPROACHES FROM
THE WEST, REDUCING THE RISK OF FIRE WEATHER CONDITIONS.
PRZ014-080745-
SOUTHEAST COASTAL PLAINS-
331 AM AST SAT FEB 7 2026
TODAY TONIGHT SUN
CLOUD COVER MCLEAR PCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 50 70
TEMP (24H TREND) 86 (+2) 68 (-1) 85
RH % (24H TREND) 45 (-14) 94 (+6) 49
WIND 20FT/EARLY(MPH) SW 12 N 6 N 13 G18
WIND 20FT/LATE(MPH) SW 12 N 6 N 13 G18
MIXING HGT(FT-AGL/MSL)4860 4570
TRANSPORT WND (MPH) W 7 N 12
VENT RATE (KT-FT) 29160 45700
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-080745-
SOUTHERN HILLS-
331 AM AST SAT FEB 7 2026
TODAY TONIGHT SUN
CLOUD COVER MCLEAR PCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 60 70
TEMP (24H TREND) 83 (+4) 65 (-1) 80
RH % (24H TREND) 58 (-11) 99 (+6) 64
WIND 20FT/EARLY(MPH) SW 10 N 10 N 12
WIND 20FT/LATE(MPH) SW 10 N 10 N 12
MIXING HGT(FT-AGL/MSL)5430 4440
TRANSPORT WND (MPH) W 7 N 13
VENT RATE (KT-FT) 32580 48840
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-080745-
NORTH COASTAL PLAINS-
331 AM AST SAT FEB 7 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 70 70 70
TEMP (24H TREND) 84 (-1) 68 (0) 81
RH % (24H TREND) 62 (-2) 100 (+2) 63
WIND 20FT/EARLY(MPH) NW 13 N 11 N 14 G17
WIND 20FT/LATE(MPH) NW 13 N 11 N 14 G17
MIXING HGT(FT-AGL/MSL)4740 4150
TRANSPORT WND (MPH) W 8 N 14
VENT RATE (KT-FT) 33180 49800
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-080745-
NORTHERN HILLS-
331 AM AST SAT FEB 7 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 70 70 70
TEMP (24H TREND) 83 (-1) 66 (0) 80
RH % (24H TREND) 63 (+1) 100 (+3) 66
WIND 20FT/EARLY(MPH) NW 12 N 11 N 14
WIND 20FT/LATE(MPH) NW 12 N 11 N 14
MIXING HGT(FT-AGL/MSL)5420 3880
TRANSPORT WND (MPH) W 8 N 14
VENT RATE (KT-FT) 37940 46560
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-080745-
WEST COAST-
331 AM AST SAT FEB 7 2026
TODAY TONIGHT SUN
CLOUD COVER MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 60 60
TEMP (24H TREND) 85 (+1) 67 (-2) 84
RH % (24H TREND) 62 (-3) 96 (+4) 59
WIND 20FT/EARLY(MPH) NW 14 N 14 N 17 G19
WIND 20FT/LATE(MPH) NW 14 N 14 N 17 G19
MIXING HGT(FT-AGL/MSL)4150 4740
TRANSPORT WND (MPH) W 9 N 16
VENT RATE (KT-FT) 33200 66360
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-080745-
EASTERN INTERIOR-
331 AM AST SAT FEB 7 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 70 70 70
TEMP (24H TREND) 84 (+1) 66 (-1) 80
RH % (24H TREND) 60 (-6) 100 (+2) 66
WIND 20FT/EARLY(MPH) NW 8 N 8 N 13
WIND 20FT/LATE(MPH) NW 8 N 8 N 13
MIXING HGT(FT-AGL/MSL)6590 4400
TRANSPORT WND (MPH) W 3 N 14
VENT RATE (KT-FT) 19770 52800
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-080745-
LUQUILLO MOUNTAIN RANGE-
331 AM AST SAT FEB 7 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 70 80 70
TEMP (24H TREND) 80 (+2) 64 (-1) 76
RH % (24H TREND) 66 (-9) 100 (+1) 71
WIND 20FT/EARLY(MPH) LGT/VAR N 5 N 11
WIND 20FT/LATE(MPH) LGT/VAR N 5 N 11
MIXING HGT(FT-AGL/MSL)5160 4150
TRANSPORT WND (MPH) W 3 N 14
VENT RATE (KT-FT) 15480 49800
DISPERSION 4 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-080745-
CENTRAL MOUNTAIN RANGE-
331 AM AST SAT FEB 7 2026
TODAY TONIGHT SUN
CLOUD COVER MCLEAR PCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 50 70 70
TEMP (24H TREND) 80 (+1) 63 (-1) 78
RH % (24H TREND) 63 (-4) 100 (+5) 67
WIND 20FT/EARLY(MPH) NW 12 N 12 N 14
WIND 20FT/LATE(MPH) NW 12 N 12 N 14
MIXING HGT(FT-AGL/MSL)6360 4020
TRANSPORT WND (MPH) W 5 N 13
VENT RATE (KT-FT) 25440 44220
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-080745-
CAYEY MOUNTAIN RANGE-
331 AM AST SAT FEB 7 2026
TODAY TONIGHT SUN
CLOUD COVER MCLEAR MCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 70 70
TEMP (24H TREND) 80 (+2) 65 (0) 76
RH % (24H TREND) 61 (-12) 100 (+2) 73
WIND 20FT/EARLY(MPH) W 6 N 5 N 11
WIND 20FT/LATE(MPH) W 6 N 5 N 11
MIXING HGT(FT-AGL/MSL)5600 4510
TRANSPORT WND (MPH) W 5 N 15
VENT RATE (KT-FT) 22400 58630
DISPERSION 4 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-080745-
VIEQUES-
331 AM AST SAT FEB 7 2026
TODAY TONIGHT SUN
CLOUD COVER CLEAR MCLDY MCLDY
PRECIP TYPE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 0 70 70
TEMP (24H TREND) 85 (0) 70 (-2) 85
RH % (24H TREND) 58 (-5) 98 (+4) 55
WIND 20FT/EARLY(MPH) W 5 N 9 N 16 G20
WIND 20FT/LATE(MPH) W 5 N 9 N 16 G20
MIXING HGT(FT-AGL/MSL)2690 4050
TRANSPORT WND (MPH) NW 3 N 18
VENT RATE (KT-FT) 8070 64800
DISPERSION 3 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-080745-
CULEBRA-
331 AM AST SAT FEB 7 2026
TODAY TONIGHT SUN
CLOUD COVER CLEAR PCLDY MCLDY
PRECIP TYPE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 0 70 70
TEMP (24H TREND) 86 (+1) 70 (-4) 85
RH % (24H TREND) 59 (-7) 98 (+8) 57
WIND 20FT/EARLY(MPH) NW 5 N 10 N 16 G19
WIND 20FT/LATE(MPH) NW 5 N 10 N 16 G19
MIXING HGT(FT-AGL/MSL)2820 4100
TRANSPORT WND (MPH) NW 6 N 17
VENT RATE (KT-FT) 14100 61500
DISPERSION 4 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-080745-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
331 AM AST SAT FEB 7 2026
TODAY TONIGHT SUN
CLOUD COVER MCLEAR PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 50 50
TEMP (24H TREND) 87 (+2) 68 (-2) 86
RH % (24H TREND) 47 (-7) 95 (+7) 47
WIND 20FT/EARLY(MPH) W 17 G22 N 17 G22 N 20 G24
WIND 20FT/LATE(MPH) W 17 G22 N 17 G22 N 20 G24
MIXING HGT(FT-AGL/MSL)4960 5090
TRANSPORT WND (MPH) W 9 N 10
VENT RATE (KT-FT) 39680 45810
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-080745-
SAINT THOMAS AND SAINT JOHN-
331 AM AST SAT FEB 7 2026
TODAY TONIGHT SUN
CLOUD COVER MCLEAR PCLDY MCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 10 60 70
TEMP (24H TREND) 86 (+2) 70 (-4) 86
RH % (24H TREND) 58 (-10) 98 (+8) 55
WIND 20FT/EARLY(MPH) W 9 N 9 N 14 G18
WIND 20FT/LATE(MPH) W 9 N 9 N 14 G18
MIXING HGT(FT-AGL/MSL)3020 4100
TRANSPORT WND (MPH) SW 10 N 17
VENT RATE (KT-FT) 27180 61500
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-080745-
ST CROIX-
331 AM AST SAT FEB 7 2026
TODAY TONIGHT SUN
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 20 50
TEMP (24H TREND) 85 (0) 70 (-4) 85
RH % (24H TREND) 59 (-8) 100 (+10) 58
WIND 20FT/EARLY(MPH) W 8 NW 6 N 14 G18
WIND 20FT/LATE(MPH) W 8 NW 6 N 14 G18
MIXING HGT(FT-AGL/MSL)4360 2500
TRANSPORT WND (MPH) W 7 N 20
VENT RATE (KT-FT) 26160 42500
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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